static long
rtcwrite(Chan *c, void *buf, long n, vlong offset)
{
Rtc rtc;
ulong secs;
char *cp, sbuf[32];
switch((ulong)c->qid.path){
case Qrtc:
/*
* read the time
*/
if(offset != 0 || n >= sizeof(sbuf)-1)
error(Ebadarg);
memmove(sbuf, buf, n);
sbuf[n] = '\0';
cp = sbuf;
while(*cp){
if(*cp>='0' && *cp<='9')
break;
cp++;
}
secs = strtoul(cp, 0, 0);
/*
* convert to bcd
*/
sec2rtc(secs, &rtc);
/*
* write it
*/
qlock(&rtclock);
setrtc(&rtc);
qunlock(&rtclock);
return n;
case Qnvram:
if(offset > NVWRITE)
return 0;
if(n > NVWRITE - offset)
n = NVWRITE - offset;
qlock(&rtclock);
memmove(nvr.ram+offset, buf, n);
*nvr.cksum = rtcgencksum();
qunlock(&rtclock);
return n;
}
error(Egreg);
return 0; /* not reached */
}
static long
rtcwrite(Chan* c, void* buf, long n, vlong off)
{
Rtc rtc;
ulong secs;
char *cp, *ep;
ulong offset = off;
if(offset!=0)
error(Ebadarg);
switch((ulong)c->qid.path){
case Qrtc:
/*
* read the time
*/
cp = ep = buf;
ep += n;
while(cp < ep){
if(*cp>='0' && *cp<='9')
break;
cp++;
}
secs = strtoul(cp, 0, 0);
/*
* convert to rtc
*/
sec2rtc(secs, &rtc);
/*
* write the clock
*/
ilock(&rtclock);
outb(Paddr, Seconds); outb(Pdata, rtc.sec);
outb(Paddr, Minutes); outb(Pdata, rtc.min);
outb(Paddr, Hours); outb(Pdata, rtc.hour);
outb(Paddr, Mday); outb(Pdata, rtc.mday);
outb(Paddr, Month); outb(Pdata, rtc.mon);
outb(Paddr, Year); outb(Pdata, rtc.year % 100);
iunlock(&rtclock);
return n;
}
error(Ebadarg);
return 0;
}
static long
rtcwrite(Chan* c, void* buf, long n, vlong off)
{
int t;
char *a, *start;
Rtc rtc;
ulong secs;
uchar bcdclock[Nbcd];
char *cp, *ep;
ulong offset = off;
if(offset!=0)
error(Ebadarg);
switch((ulong)c->qid.path){
case Qrtc:
/*
* read the time
*/
cp = ep = buf;
ep += n;
while(cp < ep){
if(*cp>='0' && *cp<='9')
break;
cp++;
}
secs = strtoul(cp, 0, 0);
/*
* convert to bcd
*/
sec2rtc(secs, &rtc);
PUTBCD(rtc.sec, 0);
PUTBCD(rtc.min, 1);
PUTBCD(rtc.hour, 2);
PUTBCD(rtc.mday, 3);
PUTBCD(rtc.mon, 4);
PUTBCD(rtc.year, 5);
/*
* write the clock
*/
ilock(&nvrtlock);
outb(Paddr, Seconds); outb(Pdata, bcdclock[0]);
outb(Paddr, Minutes); outb(Pdata, bcdclock[1]);
outb(Paddr, Hours); outb(Pdata, bcdclock[2]);
outb(Paddr, Mday); outb(Pdata, bcdclock[3]);
outb(Paddr, Month); outb(Pdata, bcdclock[4]);
outb(Paddr, Year); outb(Pdata, bcdclock[5]);
iunlock(&nvrtlock);
return n;
case Qnvram:
if(n == 0)
return 0;
if(n > Nvsize)
n = Nvsize;
start = a = smalloc(n);
if(waserror()){
free(start);
nexterror();
}
memmove(a, buf, n);
poperror();
ilock(&nvrtlock);
for(t = offset; t < offset + n; t++){
if(t >= Nvsize)
break;
outb(Paddr, Nvoff+t);
outb(Pdata, *a++);
}
iunlock(&nvrtlock);
free(start);
return t - offset;
}
error(Ebadarg);
return 0;
}